Improved bueglae-alaem



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PATENTEU DEC 3l ISS? I @attrib tetes atmtQffr.

GRUM AND WESLEY IRWIN, OF GIRGLEVILLE, OHIO, ASSIGNORS TO O. J. ORUM AND JAMES HARSHA, OF SAME PLACE.

LcttersPatent No. 72,723, dated December 31, 1867.

IMrRovsD Bottema-ALARM.

TO ALL WHOM IT MAY CONCERN:

Be itknown that we, C.J. CRUM and WESLEY IRWIN, both of Circlcville, in the county oil Pickaway, and State of Ohio, have invented a. new. and useful Improvement in Burglar-Alarms and'we do hereby declare the following to be'a full, clear, and exact description of the same, reference being had to the accompanying drawings, which are made a part of this speciiication.

This burglar-alarm consists of a" stock or casting, adapted to be fastened tothe jamb of a door or window, and having a hammer attached to the end of aispring, which, being held in a notch on the stock, is released in the act of opening the door or window, and thereby caused to throw the hammer against a percussion-cap, the explosion of which serves to alarmthc household, and also to light a mateh andv alamp which are supported upon the stock.

Figure 1 is a perspective viewcf our improvedv burglar-alarm, as applied to thejamb of a door, a portion of the latter and its frame being shown inred lines. l

Figure 2 is a similar View ofthe alarm in a reversed position.

Similar letters of reference indicate corresponding parts in the two figures.

In the drawings, A rcprcnsents a cast stoclgghavingllurgs BB, in which a rod, C, is rigidly fixed by clinehing or'otherwise. D is a spring coiled about the rod C, and having a projecting portion, which carries a hammer, E,l at its extremity. '.Ihe foot of the stock A has a iiange, a, in which are two notches a a, at either side of an intermediate opening, a2. The hammerE may be retracted -i'rom the nipple F on thc stock A, and' held in its retracted position bythe engagement ofv the spring D with one of thenotchcs al al, as shown in iig. 1. G is a lamp, supported by a bracket, H, which is attached to the upright part of the stock A by means of hooks I I. A pair of jaws or a socket, as seen at J, may be attached to the bracket II, for the purpose of receiving and holding a match, as represented in iig. I. The stock A maybe fastened to the jamb ofthe door or window,`

either at the right or left-hand side, by a screw, K,or otherwise.

The operation' is as follows: The-stock A, with its described appurtenances, being fixed in proper position upon ajamb, the hammerE is retracted and held, as shown in fig. l. The hammer being then within the field of i motion of the door (or window," as the case may be,) is struck by the latter, and the spring is thus disengaged from the notch al. Being thns released, the spring D throws the hammer E against the percussion-cap on the nipple F, and the cap being thereby exploded, ignites the match,whesc coated extremity is held in a position in line with the orifice of the nipple and the lamp-wick. The proximity of the ignited end of the match with -Y the lamp-wick, insures the lightingl of the latter, and thus, by this simple contrirancc, Aa simultaneous alarm and lighting oi' the apartment is eifected. A

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is'- 1. The combination, with the stock A and notched Iiange a ct1 al, of the hammer E, spring D, rod C, matchlighting nipple F, and a screw or other attaching-device, K, substantially as described.

2. The combination, with the parts A, a, D, E, and F, of the lamp-bracket H and match-holder J, substantially as described.

To the above specification of our burglar-alarm, we have signed our hands, this 17th day of October,

o. J. oRUM, WESLEY IRWIN.

Witnesses:

vC. S. Brrznn, JonN MoEwINe. 

